Device for forming shuttles.



J. GRANZ. DEVICE FOR FORMING SHUTTLES. APPLICATION FILED JULY 8,1915.RENEWED JAN. 19.1917.

Patented Sept. 4, 191?.

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JOSE]? GBANZ, 0F PLAUEN, GERMANY.

DEVICE FOR FORMING SHUTTLES.

Application filed July 8, 1915, Serial No. 38,696.

To all whom it may concern:

Be it known that I, Josnr GRANZ, engineer, a subject of the GermanEmperor, residing at Plauen, Vogtland, in the Kingdom of Saxony andEmpire of Germany, have invented certain new and useful Improvements inDevices for Forming Shuttles, of which the following is a specification.

This invention relates to shuttles and means of producing the same.-

The invention is clearly illustrated in the accompanying drawings,which, with the numerals of reference marked thereon, form a part ofthis specification, and in which- Figure 1 is a vertical section of ashell for constructing a shuttle in accordance with my invention.

Fig. 2 is a side view thereof.

Fig. 3 is a vertical section showing the parts in position ready for thefirst step.

Fig. 4 is a substantially central vertical section showing the parts inthe position they assume when the process is completed.

Fig. 5 is a view showing the parts partially removed.

Fig. 6 is a top plan of Fig. 5 with the punch holder removed.

Like letters of reference indicate like parts throughout the severalviews.

The shell shown in Figs. 1 and 2 has the general form of a well-knownshuttle for embroidery machines. By the means and process soon to bedescribed I produce a swelling in one of the sides of the shell and forthis purpose I employ a swage a having therein a cavity of the shape ofthe swell which it is desired to give to the shell. In this swage, inthe cavity in the upper face thereof, is a counterplate c in the lowerportion of the vertical face thereof adjacent said cavity, there being acurved recess conforming to the upper portion of the cavity. Thiscounterplate may be secured to the swage a in any suitable manner, as bybolts (Z 6, the flanged heads of which engage upon opposite sides of thecounterplate and hold it firmly in position.

i is a punch or wedge-shaped member car- Specification of LettersPatent.

Patented Sept. 41, :Wil't.

Renewed January 19, 1917. Serial No. 143,418.

ried in a punch holder f, which latter may be forced downward in anysuitable manner. The punch or wedge-shaped member 2' is adapted to slidevertically within a box 9 h and in order to limit the movement of thepunch in the box there are fixed in the two sides of the boxperpendicular notches m with which engage pins 70 in the punch.

At the lower end of the box there is fixed a top swage n retained inposition by the pins 0 in the side of the box, said pins being receivedin holes in the adjacent face of the top swage, which latter is of theshape of the swelling to be formed in the shell 00. The construction issuch that the swage 0?. cannot become separated from the box.

The operation is as follows :The top swage n is placed in the positionseen in Fig. 3 and then the shell m is slipped over the front end of theparts 9 h and n and the punch holder f with its punch or wedgeshapedmember 71 forced downward until the shell w is forced completely intothe depression in the swage a and as this is done the punch orwedge-shaped member 2' enters between the inner face of the part 9 ofthe box and the adjacent face of the top swage a, when upon continueddownward movement of the punch 71 the top swage n is forced laterallyand this lateral movement forces the shell as into the cavity of thebottom swage and the swell b is formed upon the side of the shell, thuscompleting the shuttle. The punch z is then raised, the top swage movedto the left into the position shown in Fig. 5, so that the parts i g nand 72. may be easily taken out. Then in order to remove the shuttlefrom the bottom swage a, the bolts d e are removed and the counter plate0 is removed from its recess in the bottom swa e a. Another shell isthen inserted as be ore and the operation repeated. By this means allthe shuttles will be formed exactly alike which is a great desideratum.

lVhat is claimed as new is In a device of the character described, abottom swage having a cavity of the shape of the swell to be given tothe shell, a counter-p1ate in said cavity, a vertically slidable andmeans for operating said Wedge-shaped box, a lateral pin on the lowerportion theremember. 0 of, a top swage laterally movable on said Intestimony whereof I afiix my signature pin, a Wedge'shaped membervertically movin presence of tWo Witnesses.

able in said box and independent thereof JOSEF GRANZ. with IitsloWer'end engageable With said top Witnesses:

swage to move it laterally when said top "ROBERT'BERGMANN,

swage has reached the bottom of the cavity, ROBERT H. NmR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' waihington, m0?

